Kate Hudson Once Caught Matthew McConaughey Naked and Howling in the Woods

But even Kate Hudson was a little surprised with his fondness for nakedness during weekend trip with some of their friends to her parents' cottage in the Canadian woods.

"It's bear country," Hudson said last night when her Fool's Gold and How to Lose a Guy in 10 Days co-star was honored with the American Cinematheque Award at the Beverly Hilton Hotel. "We're all inside the house talking and having a glass of wine and all of a sudden I look at his friends and I'm like, 'Guys, where's Matthew?' And they go, 'I don't know.' I'm like, 'It's f--kin' dark outside, we should probably go look for him.'"

Hudson was the only one who did. As she's walking on the property, she suddenly heard McConaughey making animal noises—very loud animal noises.

"I found him standing on a rock, butt naked howling and gesturing," Hudson said with a big smile. "I was like, 'OK, there's Matthew McConaughey and he's fine. He's totally fine.'

"We can definitely say that Matthew is one with nature," she added.

As kooky as McConaughey may be, Hudson also gushed, "He is one of the most passionate and dedicated actors I've ever worked with. He's completely authentic. He attacks everything with an intensity that is palpable and demands the same intensity to be reciprocated."

McConaughey, wearing a Dolce & Gabbana tux, was joined by his gorgeous wife Camila Alves (also in D&G) and their son Levi and daughter Vida.

"Years ago, before I had children and I always knew I wanted children, I said, ‘I don't think I want to raise them around this industry,'" McConaughey said. "I don't think I want them engaged in his industry. I want to move off somewhere and have them outside of it...But I can happily and honestly say now having children, I so love having them engaged in what we do and meeting the people that we get to work with."